Design of Efficient concrete bridge deck slabs

建议研究的目的是开发一种设计混凝土桥面板的方法，该方法考虑了拱化作用的有益影响，并且对任何给定的几何形状和所有类型的铁质钢筋(钢筋、预应力钢和钢纤维)都有效。预计这项研究将相对于现行加拿大和美国桥梁设计标准中包含的桥面板设计经验方法向前迈进一大步。这种方法使设计人员能够在相对有限的参数范围内考虑桥面板设计中的拱形作用。在此范围内，与仅考虑弯曲性能所需的钢筋相比，这将导致桥面板中钢筋的数量减少。通过将设计中考虑拱形动作的基础从经验基础转变为理性基础，拟议的研究将显著扩大可以利用拱形动作的好处的情况的范围。

The purpose of the proposed research is to develop a method for designing concrete bridge deck slabs that accounts for the beneficial effects of arching action, and that is valid for any given geometry and all types of ferrous reinforcement (reinforcing steel, prestressing steel, and steel fibres). It is anticipated that this research will produce a major step forward relative to the empirical method of deck slab design which is included in current Canadian and US bridge design standards. This method enables designers to account for arching action in the design of deck slabs within a relatively limited range of parameters. Within this range, it leads to reduced quantities of reinforcing steel in deck slabs relative to the reinforcement that would be required considering only bending behaviour. By shifting the basis by which arching action can be considered in design from an empirical to a rational one, the proposed research will significantly extend the range of situations in which the benefits of arching action can be exploited.